Home / 90,678.20-125,136.06-50,390.94

Finding the Fourth Proportional to 90,678.20, 125,136.06 and 50,390.94

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Solution

The fourth proportional to 90,678.20, 125,136.06 and 50,390.94 is: 69,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.20 : 125,136.06 = 50,390.94 : x
  2. Step 2: Convert to fraction form
    90,678.20/125,136.06 = 50,390.94/x
  3. Step 3: Cross multiply
    90,678.20x = 125,136.06 × 50,390.94
  4. Step 4: Simplify right side
    90,678.20x = 6,305,723,691.30
  5. Step 5: Solve for x
    x = 6,305,723,691.30/90,678.20
  6. Step 6: Final answer
    x = 69,539.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.